A140307 - OEIS

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A140307

Number of n X n binary matrices containing at most four 1's in any 3 X 3 sub-block.

1, 2, 16, 256, 15982, 3082378, 1476568000, 2280441045555, 10599616558936358, 140380164790852384033 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	CROSSREFS	`Cf. A139810.` `Sequence in context: A019318 A090727 A108242 * A114039 A090305 A197458` `Adjacent sequences: A140304 A140305 A140306 * A140308 A140309 A140310`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), May 27 2008`

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Last modified February 16 21:48 EST 2012. Contains 205978 sequences.